On Tue, Oct 10, 2017 at 05:10:27PM +0200, Andrea Bolognani wrote: > On Wed, 2017-10-11 at 00:21 +1100, David Gibson wrote: > > In order to prevent the guest from forcing the allocation of large amounts > > of qemu memory (or host kernel memory, in the case of KVM HV), we limit > > the size of Hashed Page Table (HPT) it is allowed to allocated, based on > > its RAM size. > > > > However, the current calculation is not correct: it only adds up the size > > of plugged memory, ignoring the base memory size. This patch corrects it. > > > > While we're there, use get_plugged_memory_size() instead of directly > > calling pc_existing_dimms_capacity(). The only difference is that it > > will abort on failure, which is right: a failure here indicates something > > wrong within qemu. > > Does this change invalidate in any way the calculation performed > by libvirt to figure out the memory locking limit for guests?
No. -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson
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